Book stack units



April 4, 1961 N. o. BRANDELLA BooK STACK UNITS Filed May 22, 1957 L t o.m @v mv .v :mm m w s w xm V A ...ru 1|- ||w Il. 1N.. m e

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April 4, 1961 File@ May 22, 1957 je 11G. 4 @M @@mrm 3 tion by a simplehorizontal Vrearwardly movement of the shelf while guiding its endflanges 42-42 to slide first into the notches 36 and thence rearwardlyV.through notches 34, 35 until the shelf reaches itsfunctional positionin the case. At this point the front edges 4Sof the end flanges 42-s1ipdownwardly behind the notched portions 36, as from the position occupiedby the lower shelf in Fig. 5 to the position occupied by the upper shelfin Fig. 5. Reversal of the operation permits the shelves to be easilyremoved from the uprights.

Hence it will be seen that the forces of gravity as well as thebookshelf load will normally maintain the shelf down in locked position.If desired, wedges such as indicated at 46 (Fig. 5) may be insertedbetween the shelf and the upper edge of the sl-ot 33 to hold Vthe shelfin locked 4condition during transit or other handling of the emptybookcase. As indicated at 48 (Figs. 5 7) the shelf flanges 42 arepreferably blistered or otherwise deformed adjacent their front ends soas to snug the shelves against longitudinally shifting when assembledbetween the uprights. 'i

Thus it will be understood that by virtue of the novel formations of theinterconnecting parts of the upright and shelf members, the parts may beeasily and economically fabricated yet are adapted to slip-fit togetherinto rigidly locked position at any selected elevation. Similarly, theshelves are easily dismountable without the use of tools or the like.

I claim:

1. A book stack construction comprising a plurality of stack units, eachof said units comprising vertically extending spaced end panelssupporting therebetween' book shelves, each of said panels being formedof sheet metal to each include a major web portion having itslongitudinal edges reversely bent to provide a pair of finishing edgeflanges of opposed channel form on the same side of said major webportion, the marginal edge portion of one of said flanges being againreversely bent to provide a channel facing forwardly from the unit,whereby the edges of flange portions of adjacently disposed units may beslip-fittedV into relatively nested positions within the channels of thenext adjacent units for locking the units together and presenting toview from forwardly of theconstruction an enclosed unit junction effect.

2. In a bookstack construction comprising a plurality of cases, each ofsaid cases comprising vertically extending spaced end panels having bookshelves Ytherebetween, said panels each being formed of sheet metal t'oinclude a major web portion having its longitudinal edges reversely bentto provide a pair of finishing edge flanges of opposed channel form onthe same side of said major web portion, the marginal edge portion ofone of said flanges at one front end of each of said cases being againreversely bent to provide a channel ,facing forwardly from the case,whereby the edges of flange portions of adjacently disposed cases may beslip-fitted into relatively nested positions into said channels forlocking the front edges of the cases together, and a V`construction endclosure panel comprising an `end plate portion having its front and rearedgesreversely bent and one of its bent edges lthen again reversely bentprol viding a groove receiving the bent edge of the outer end panel ofone of said cases, thereby presentingV to view from forwardly'of theconstruction a closed end and case junction effect. i

3. In a book stack construction comprising a plurality of cases, each ofsaid cases comprising vertically extending spaced end panels havingYbook shelves therebetween, said panels each being formed of sheet'metalto include a major web portion formed to include an inwardly pressedvertical ridgeportion and having its longitudinal edges outwardly andreversely bent to provide a pair of finishing edge flanges of opposedchannel form on one side of said major web portion, said ridge portionsbeing provided with series of vertically spaced horizontal slots intowhich said shelves are directly slipfitted, the marginal edge portion ofone of said flanges at one front end of each of said cases being againreversely bent to provide a channel facing forwardly from the case, theedges of flange portions of adjacently disposed cases being slip-fittedinto relatively nested positions with said cases being disposed infrontally aligned relation.

4. A book stack comprising a pair of parallel uprights arranged invertical standing fixed spaced relation and supporting a plurality ofbookshelves therebetween, each upright comprising a generallyrectangular sheet metal plate having a pair of vertically continuousridge portions pressed inwardly therefrom, said ridge portions beinghorizontally slotted to provide a series of vertically spaced andhorizontally alined slots extending throughout the inwardly pressedextents of said ridge portions, said ridge portions having notchedportions opening into the bottoms of said slots at the front and rearthereof in the ridge portions at the front of said stack and at thefront thereof in the ridge portions at the rear of said stack, saidshelves each comprising a main plate portion having end flangesextending downwardly therefrom slide-fitted into said slots so that saidshelf plate portions overhang the bottom edges of said slots and saidflanges are thereby hooked upon said upright ridge portions, the notchedportions at the front of said stack being of less depth than the heightof said end flanges, whereby the latter slip downwardly behind saidfront notched portions to prevent horizontal forward movement of saidshelves, the vertical spacing of said slots being suflicient to enablesaid end flanges to clear said front notched portions upon lifting saidshelves, said shelf plate portions having stiffening flanges dependingfrom opposite sides thereof, the stiffening flanges along the rear sideof said shelf plate portions being spaced from the opposite ends thereofto permit said plate portions to be slide-fitted through said slots, andthe stiffening flanges along the front side of said plate portionsextending substantially to said opposite ends to abut said ridgeportions' and thereby stop rearward horizontal movement of said shelves.

5. A book stack as set forth in claim 4, wherein the rear edges of saidend flanges are cam-shaped to facilitate rearward sliding of saidshelves over said notched portions and into said slots.

References Cited in the file of this patent v UNITED STATES PATENTS.

A657,661 Kinnear Sept. 11, 1900 Y 969,822 Wheeler Sept. 13,v 19101,030,472 Krag .lune 25, 1912 1,055,050 Knape Mar. 4, 1913 1,774,235Ohnstrand Aug. 26, 1930 2,001,574 Jacobson May 14, 1935 2,166,095Kotrbaty July l1, 1939 V2,259,382 Ingels Oct. 14, 1941 2,489,708lAHammer Nov. 29, 1949 2,732,044 McClune Jan. 24, 1956 FOREIGN PATENTSV40,278 France lune 8, 1932 167,802 Australia..."` .lune 7, 1956 548,186i NFrance .Oct. 14, 1922

